1. a)Which of the following statements are TRUE for a buffersolution.
Select all that are True.
_ A buffer can be prepared by combining a weak acid and itsconjugate base.\"
_ A buffer resists changes in pH.
_ When a strong acid is added to a buffer, it reacts with theconjugate base which slightly increases the pH of the solution.
3. Given the following data set: Indicate where the bufferecapacity has been exceeded.
| Solution | pHĂ‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ | Change in pHĂ‚ Ă‚ Ă‚ |
| Acetic acid (25 mL)Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ | 2.88Ă‚ Ă‚ | |
| Sodium acetate | 7.46 | |
| Mixture (50 mL) | 4.70 | |
| After 5 mL NaOH | 4.90 | 0.20Ă‚ Ă‚ |
| After 10 mL NaOH | 5.13 | 0.23 |
| After 15 mL NaOH | 5.42 | 0.29 |
| After 20 mL NaOH | 5.95 | 0.53 |
| After 25 mL NaOH | 11.17 | 5.22 |
The buffer capacity was exceeded when_______mL of NaOH wasadded?
